L S Grechushnikova

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In the sensorimotor cortex of awake rabbits monosynaptic afferent and efferent connections of callosal neurons (CN) with ipsilateral specific thalamic nuclei (ventral posterolateral, ventral posteromedial, ventral lateral and anteroventral nuclei) were analyzed by electrophysiological method and compared with those of target-units of callosal fibres (TU).(More)
Antidromic responses of two callosal neurones to a local electrical stimulation of the rabbit sensorimotor cortex may be recorded simultaneously with one microelectrode in the homotopic cortical area. In such recording conditions the relative amplitude of extracellularly recorded action potentials of the two neurones is determined primarily by the distance(More)
In chronic experiments on rabbits it was shown that after two-three stimulations of the midbrain reticular formation (stimulation frequency 200 cps, pulse duration 0.1-0.5 ms, voltage 1-3 V, stimulation duration 5 s) a dominant focus was formed in it, which led simultaneously to a statistically significant increase in the amplitude of evoked potential in(More)
The possibility of occurance of action potentials (AP) in neuronal terminals after preliminary excitation of a cortical area was studied in unanaesthetized, non-immobilized rabbits. It was found that a low-frequency subconvulsive stimulation of the sensorimotor cortex may lead to a spontaneous appearance of AP groups that spread antidromically toward the(More)
During creation of a dominant focus in the midbrain reticular formation (RF) by its multiple stimulation with a high-frequency current (stimulation frequency 200 Hz, pulse duration 0.1-0.5 ms, voltage 1-3 V, duration 5 s) a statistically significant increase of the amplitude of the evoked potential (EP) in RF to light flashes was revealed in comparison with(More)
Criteria of identification of transcallosal monosynaptic responses recorded extracellularily in the sensorimotor cortex to stimulation of the homotopic area of the contralateral hemisphere were studied in unanaesthetized, non-immobilized rabbits. It was found that major criteria by which a monosynaptic response differs from an antidromic one, are: absence(More)